JP2000188703A - Video signal transmitter, video signal transmission method, video signal image pickup device and video signal processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a video signal transmitter by which the same image quality as that of a video image at a standard speed is obtained by simply converting a high speed video signal into a plurality of video signals at a standard speed, and to provide a video signal transmission method, a video signal image pickup device and a video signal processor. SOLUTION: A video camera system is provided with a video camera 1 that outputs a video signal resulting from picking up an object at a high speed, transmission lines 23 through which the video signal is transmitted and a CCU 2 that applies signal processing to the transmitted video signal. Then the video camera 1 decomposes the high speed video signal directly into a plurality of standard speed video signals through the provision of blank field as an additional period, a plurality of the standard speed video signals are transmitted through the transmission lines 23, the CCU 2 arranges a plurality of the standard speed video signals and outputs the result. The CCU 2 processes a plurality of the standard speed video signals and then a high speed image pickup video camera system is simply built up.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal transmitting apparatus for transmitting a video signal picked up by a video camera, for example, to a subsequent signal processing system.

[0002]

2. Description of the Related Art When performing high-speed shooting with a video camera system including a video camera and a camera control unit (hereinafter referred to as "CCU"), such as a video camera system for broadcasting business, a conventional standard camera is used. A signal having a frequency band corresponding to twice the speed of the video signal is obtained.

Conventionally, this high-speed video signal has been directly transmitted from the camera to the CCU. However, in the case of digital transmission, if it is desired to obtain the same image quality as a standard-speed image as compared with the standard signal transmission, a double-speed video signal is required. A sampling frequency was needed.

[0004]

In the above-mentioned conventional video camera system, when a high-speed video signal requires the same image quality as a standard-speed image, a sampling frequency corresponding to a double speed is required, so that the signal is handled. The driving frequency of an LSI (Large Scale Integrated Circuit) or the like also becomes extremely high, and there is a disadvantage that each electric circuit is technically difficult because higher timing performance is required. In addition, if the camera supports a certain high-speed shooting speed but also supports other speeds, it will be difficult to simply cope with a variable speed because the bandwidth of a video signal obtained as it is in a wide speed range changes. There was an inconvenience.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a video signal capable of obtaining the same image quality as a standard speed video by easily converting a high speed video signal into a plurality of standard speed video signals. A transmission device, a video signal transmission method, a video signal imaging device, and a video signal processing device are provided.

[0006]

According to the present invention, there is provided a video signal transmitting apparatus for outputting a video signal obtained by capturing an image of a subject at a high speed, a transmitting means for transmitting the video signal supplied by the imaging means, A signal processing means for performing signal processing on the video signal transmitted by the transmission means, wherein the high-speed video signal is directly or additionally provided by the imaging means to provide a plurality of standard-speed video signals. The transmission means transmits the plurality of standard speed video signals, and the signal processing means outputs the plurality of standard speed video signals in a unit period.

According to a video signal transmission method of the present invention, an imaging step of outputting a video signal obtained by imaging a subject at a high speed, a transmission step of transmitting the video signal supplied in the imaging step, and a transmission step of transmitting the video signal are performed by the transmission step. A signal processing step of performing signal processing on the video signal, wherein the high-speed video signal is decomposed into a plurality of standard-speed video signals directly or with an additional period by the imaging step, and the transmission is performed. The plurality of standard-speed video signals are transmitted by the step, and the plurality of standard-speed video signals are aligned and output for each unit period by the signal processing step.

Further, the video signal imaging apparatus of the present invention is provided by providing an imaging means for outputting a high speed video signal obtained by imaging a subject at a high speed, and providing the video signal supplied by the imaging means directly or with an additional period. Separating means for decomposing into a plurality of standard speed video signals, and signal processing means for performing signal processing so that the plurality of standard speed video signals can be transmitted in a predetermined transmission format, wherein a plurality of high speed video signals of a predetermined transmission format are provided. The signal is transmitted so as to be able to be processed as a standard speed video signal.

Further, the video signal processing apparatus of the present invention is a standard speed video signal obtained by decomposing a video signal picked up at a high speed directly or by providing an additional period. Signal processing means for performing signal processing so that the standard speed video signal can be internally processed, and switching control means for outputting a plurality of standard speed video signals internally processed by the signal processing means in a unit period. It is provided.

[0010] Also, the video signal transmission apparatus of the present invention comprises: an imaging means for outputting a video signal obtained by imaging a subject at a high speed; a transmission means for transmitting the video signal supplied by the imaging means; A signal processing unit for performing signal processing on the transmitted video signal, wherein, in the imaging unit or the signal processing unit, the video signal has a frequency higher than a signal frequency used for signal processing in a subsequent stage. And the signal is divided into a plurality of signals so that the signal frequency is converted to match the signal processing frequency of the subsequent stage.

According to the video signal transmission apparatus of the present invention, the following operations are performed. A video signal photographed at a high speed multiple times the standard by the imaging means is converted into a digital video signal, separated into a plurality of standard speed video signals, and the plurality of standard video signals are converted into a standard video signal of a predetermined transmission format. The signal is converted into a signal and transmitted to the signal processing unit via the wideband transmission unit.

Here, a blank field is included as an additional period when a high-speed photographed image of a plurality of times or less is separated into a plurality of standard video signals. The blank field signal indicates which field of the plurality of standard video signals includes the blank field.
Similarly, the blank field signal is transmitted to the signal processing unit via the transmission unit.

The signal processing means converts a plurality of standard video signals transmitted via the transmission means into a plurality of standard video signals which can be internally processed, and aligns the plurality of standard speed video signals for each unit period. Output to various video devices as multiple video outputs.

[0014]

The present embodiment will be described below.
First, the configuration of a camera system using the video signal transmission device according to the present embodiment will be described with reference to FIG.

In FIG. 1, the camera system comprises a video camera 1 for picking up video and audio signals at a high speed, and a CCU for receiving a video signal supplied from the video camera and outputting it as a video source to various video devices.
(Camera control unit) 2 and video camera 1
An optical fiber 4 connects the CCU 2 to the CCU 2, a VTR and a switcher 3 for recording or transmitting a video signal output from the CCU 2, and a cable 5 for connecting the CCU 2 to the VTR and the switcher 3. CCU2 is SMPT
SDI (Serial Digital
Interface) output video signals.

As the optical fiber 4, for example, a composite optical fiber cable combining two optical fibers for transmission and reception and a metal cable for power supply line and control is used.

The camera system configured as described above has
The following operation is performed. For example, when the video camera 1 is arranged in a studio and the CCU 2, VTR, and switcher 3 are arranged in a sub-adjustment room, the video camera 1 is connected by an optical fiber 4 arranged between the studio and the sub-adjustment room. And CCU2. CC of sub-adjustment room
Various control signals are supplied from U2 to the video camera 1 in the studio via the optical fiber 4.

Thus, when a program is recorded by the video camera 1 in the studio, the video signal and the audio signal are supplied to the CCU 2 in the sub-control room via the optical fiber 4. The CCU 2 outputs the video signal and the audio signal, and performs signal processing so that the video signal and the audio signal can be recorded, edited, and transmitted in a VTR, a switcher 3, or the like at a later stage.

The optical transmission format of the optical fiber 4 is ARIB STANDARD BTA-S0.
04B, S005B, and S006B standards.

FIG. 2 shows a high-speed photographing video camera system constituting the video signal transmitting apparatus according to the present embodiment. The video signal transmission apparatus according to the present embodiment will be described by taking as an example a triple speed shooting in a high-speed shooting video camera system (hereinafter, referred to as a “super motion camera system”).

In the super motion camera system according to the present embodiment, as shown in FIG.
An A / D converter circuit 11 converts an analog video signal into a digital video signal from a video signal SO photographed at a high speed three times the standard speed by the imaging device 10, and three standard speed video signals SO 1 by a memory 12. ~ SO
3 and the three standard video signals SO1 to SO3
Is converted into standard video signals S1 to S3 of a predetermined transmission format by the process LSI 13 and transmitted to the camera control unit 2 via the broadband transmission path 23.

Here, a high-speed photographed image S of 3 times or less speed
When O is separated into a plurality of standard video signals SO1 to SO3, a blank field is included.
The blank field signal Sbf indicates which field of the plurality of standard video signals SO1 to SO3 includes a blank field. Blank field signal S
Similarly, bf is transmitted to the camera control unit 2 via the transmission path 23.

In the camera control unit 2,
Three standard video signals S transmitted via the transmission path 23
O1 to SO3 are converted into three standard video signals SU1 to SU3 that can be internally processed by the process LSI 20, and a plurality of SDI outputs SI1 to SI3 are arranged by the switching circuit 22 by aligning the three standard speed video signals for each unit period. Output to various video devices.

Here, a blank field is determined by the memory 21 from the blank field signal Sbf.
Only valid images are stored from the standard video signals SU1 to SU3, and the slow reproduction signal SL is output from the memory 21.

In the video camera 1, after the high-speed video SO at triple speed is converted into three standard video signals SO1 to SO3 using the memory 21, the process LSI 1
3, three standard video signals SO1 to SO3 are input. Here, the process LSI 13 has a function of processing a video signal unique to a camera and a transmission process function of converting the video signal into a transmission format. In FIG. 2, the process LSI 13 is shown as a single unit, but the video signal processing and the transmission processing may be constituted by separate ICs, or the three standard video signals SO1 to SO3 may be used. On the other hand, video signal processing may be performed by using three ICs. In this case, a circuit can be configured by using a conventional IC for processing a standard camera as it is.

The transmission format conversion process IC converts three standard digital video signals for internal processing of the camera into standard 4: 2: 2 luminance signals and color difference signals Y, CB, CR, a transmission frequency of 27 MHz, and the number of bits. 10
It is converted into a format corresponding to a D1 format signal composed of bit parallel signals. Then, in order to transmit a signal line, a power supply line, and a control line via a transmission line 23 such as an optical fiber or TRAIX, time-division multiplexing of three video signals is performed. Or, without limitation, 3
3 equivalent to a serial SDI signal of 270 MHz
It is also possible to transmit using a BNC cable.

Further, since the transmission is a dedicated transmission between the video camera 1 and the CCU 2, an audio signal such as a camera command or an intercom used in the camera system is also superimposed thereon. The superimposition method is based on SMPTE259M
Although the same method as that of the DI standard is adopted, since the data to be added is not included in the SDI standard, these signals cannot be supplied to other SDI standard devices as they are. However, since the video signal format is the same,
Conventional SDI standard transmission equipment can be used.

The process LSI 20 of the CCU 2 receives the three multiplexed video signals S1 to S3,
The signals are converted into three signals for internal processing of the CCU SU1 to SU3. After that, CCU2 finally gets SMPTE259M
SDI standard signals SI1 to SI3 conforming to the standard are output to subsequent devices. In the CCU 2, color correction and SDI are performed by performing signal processing with three standard signals.
The IC in the standard video system can be used as it is for signal processing such as format conversion.

FIG. 3 is a diagram showing a transmission signal of a camera output at the time of variable speed photographing according to the present embodiment. As described above, in the present embodiment, as shown in FIG. 3A, the imaging device output SO for triple high-speed shooting is basically handled as three digital video signals S1 to S3. 3B, the imaging device output SO for double high-speed photography is transmitted as it is with three digital video signals S1 to S3 as shown in FIG. 3B. At this time, the high-speed captured image SO is in a state of being insufficient for the three digital video signals S1 to S3. This missing portion is blanked in the field unit of the standard video signal, and as shown in FIG.
The digital video signals S1 to S3 are transmitted from the camera 1 to the CCU 2 with a blank field included.

The position of the blank field is a 1-bit blank field signal Sbf different from the video signal.
Transmits information from the video camera 1 via the transmission line 23, the CCU 2 determines a blank field from the blank field signal Sbf by the memory 21, and stores only valid video in the memory 21.
High-speed shooting video SO by playing back video from
Outputs a slow reproduction video signal SL.

Usually, a super motion video is recorded by an external device by outputting the video signal in the memory 21 at a standard speed.

FIG. 4 is a diagram showing a transmission signal of the CCU output during variable speed shooting according to the present embodiment. Here, when the video camera 1 shoots at three times or less speed, FIG.
As shown in FIG.
Similarly, if three video signals at 3 × speed or less are directly output to three video output lines to an external device of the CCU 2, a blank field is left in a fragmented state. It becomes a signal that is very difficult to handle in a subsequent external device.

Therefore, as shown in FIG. 4B, the images temporarily stored in the memory 21 and rearranged are output intermittently at intervals of a certain unit time T including a blank time so that a smooth image is obtained. I have.

The unit time T in FIG. 4 is determined based on the storage capacity of the memory 21 in the CCU 2 and the operational convenience of writing and reading video data to and from the memory 21. The blank period in FIG. 4 is different from the blank field in FIG.

In this case, the output of the three standard video signals SI1 to SI3 cannot be expected in real time as in the case of the triple speed shooting shown in FIG. 4A, but the reading is slower than the writing of the video data to the memory 21. By becoming
It is possible to prevent the captured video from overflowing from the memory 21 in the CCU 2 and the overflowing video from being missed.

In the blank period of the video signal having a speed of 3 times or less, for example, scene information, photographing speed information, reproduction cycle information, and the like are written as character images so that editing at the subsequent stage is easy. Thus, the three SDI signals can be effectively used even at the time of variable speed shooting. In addition to this, by outputting a control signal indicating a blank period to a video equipment at the subsequent stage, the normal SDI signal is output. Recording of a video signal and the like can be performed in the same manner as in double-speed shooting.

According to the present embodiment, when configuring a digital transmission super motion camera system, it is not necessary to perform high-speed A / D conversion and develop a dedicated high-speed processing LSI for processing the signal. This can be realized by preparing three sets of LSIs for a standard speed video signal, so that the design can be simplified.

Further, the external video system can handle the super motion video signal only by treating three standard SDI signals equivalently, and the video signal is also a standard speed signal. The input video equipment can be used as it is.

Also, at the time of shooting at a speed other than the triple speed, the CCU 2 of the present embodiment has a limit in the storage capacity of the memory 21 provided therein. Although there is a possibility that the video source cannot be recorded, it is useful to be able to record the three SDI output lines in such a case, and it is possible to avoid missing the video source.

Next, another camera system according to the present embodiment will be described. Another camera system according to the present embodiment is different from a special camera that outputs a video signal of a standard system such as NTSC / PAL by using the same signal processing system for special shooting and standard shooting. It is designed to generate an image that does not cause discomfort even between signals.

In the conventional super motion camera in the super motion camera system, analog signal processing has been performed, and it is necessary to selectively output either a triple speed video signal or a standard video signal output. Was difficult.

Further, digital processing of signals has been advanced, and digital processing of video signals has been performed even in super motion cameras. Therefore, the signal output of the triple speed and the standard speed, which could not be performed so far, can be output by digitization, but there is a disadvantage that power consumption increases and a temperature in the set increases.

As described above, in a camera system having a special function and a function of outputting a normal video signal such as NTSC / PAL, power consumption increases due to the addition of the special function. Such an increase in power consumption causes an increase in the temperature of the set, which affects the reliability of the set. Therefore, a reduction in power consumption is required.

In order to solve such a problem, in the present embodiment, attention is paid to the fact that a scene in which special shooting is performed during camera shooting is short, and standard shooting can be substituted.
In a camera system that shoots at 3x speed, such as a super motion camera system, the time for camera setting and standby is long, and in such a case, the standard video signal output can be substituted. To reduce the power consumption of the set.

FIG. 5 is a block diagram showing a configuration of another video camera system according to the present embodiment. In FIG. 5, an analog video signal is input as a signal input,
This video signal is A / D converted by an A / D conversion circuit 50 and is converted into a digital video signal A by a signal dividing circuit 5.
1 is supplied. Here, since the signal A is output at a frequency higher than the digital signal frequency used for signal processing inside the signal processing circuits (1) 55 to (3) 57 in the subsequent stage, the signal dividing circuit 51 outputs the signal A in the subsequent stage. The signal frequency is converted to match the frequency. Therefore, the video signal A is converted into a 1/3 frequency by the signal dividing circuit 51 and converted into standard signals B1 to B3. The signals B1 to B3 are supplied to signal processing circuits (1) 55 to (3) 57 via switches 52 to 54, subjected to the same signal processing, and output as signals C1 to C3. In this case, the movable contacts c of the switches 52 to 54 are connected to the fixed contact b by the control signal.

In this embodiment, the frequency of the input signal changes from 1 to 3 times, and when the signal input is 1, the signal frequency of the signal A and the signal frequency of the signal B are the same. The signal A is directly supplied to only the signal processing circuit (1) 55 without passing through the division circuit 51. By doing so, the circuit operation of the signal dividing circuit 51 and the signal processing circuits (2) 56 to (3) 57 can be stopped, and thus power consumption can be reduced. In this case, the movable contacts c of the switches 52 to 54 are connected to the fixed contact a in response to the control signal.

The selection of the 3 × speed signal and the 1 × speed signal corresponds to the selection by the control signal. When the control signal does not select the signal division, the signal B1 is input to the signal processing circuit, and the signal B2 is input. And B3 have no signal. In this way, by stopping the operation of the signal processing circuit, power consumption is reduced and the image quality when switching is prevented because the signal processing circuits have the same characteristics is prevented. Can be.

FIG. 6 is a block diagram showing a configuration of the signal dividing circuit according to the present embodiment. As described above, the signal division circuit 51 is a circuit that performs frequency conversion because the signal frequencies of the signal A and the signal B are different. In a camera, for example, there are signals of three primary colors, such as R (red), G (green), and B (blue). Actually, three signals need to be processed.
In the following description, only one system will be described.

In FIG. 6, the movable contact a of the switch 60
Connection to the fixed contact b side or c side or d side of
The signal A is supplied via the switch 60 to each of the memory circuits 61-6.
3 are supplied one channel at a time. The signal A is switched by the vertical synchronizing signal V so that each memory 61
To 63. The signals input to the memories 61 to 63 are supplied to the signal processing circuits (1) 55 to (3) 57 at the next stage, so that the signals B1 to B3 having the frequencies of the signal processing circuits (1) 55 to (3) 57 are provided. Is read as Signal A input to signal division circuit 51 and signals B1 to B output
When the frequency of the signal B3 is three times different, as shown in FIG. 6, the signals B1 to B3 converted into 1/3 signals using the memory circuits 61 to 63 of three channels are converted into the signal processing circuit (1 ) 55 to (3) 57.

FIG. 7 is a block diagram showing the configuration of the signal processing circuits (1) to (3) of the present embodiment. The signal processing circuits (1) 55 to (3) 57 have the same characteristics, and operate so as to perform the same signal processing for all three channels. Each signal processing circuit, as shown in FIG.
The outline processing is performed by the detail processing circuit 70, and the output video signals R, G, and B of the imaging device are gamma-corrected by the gamma processing circuit 71 in order to make the intensity of the input light of the imaging device proportional to the emission intensity of the display. By generating a luminance signal and a color difference signal from the gamma-corrected signal and performing white clip processing for dynamic range compression by the white clip processing circuit 72,
The signal C is output.

FIG. 8 is a block diagram showing a configuration of another video camera system according to the present embodiment. As shown in FIG. 8, as a method of switching the signal B, the operation of the signal processing circuits (2) 83 and (3) 84 is switched on or off by a control signal, and the signal processing circuits (1) 82 to (3) To use three channels of 84
It may be configured to selectively switch whether to use one channel.

The A / D conversion circuit 80, the signal division circuit 81, and the signal processing circuits (1) 82 to (3) 84 are the A / D conversion circuit 50 and the signal division circuit 5 shown in FIG.
1, corresponding to the signal processing circuits (1) 55 to (3) 57.

FIG. 9 is a block diagram showing a configuration of another video camera system according to the present embodiment. As shown in FIG. 9, a signal processing circuit 91 may be configured to output signals C1 to C3 from signal A using a circuit capable of performing signal processing up to three times in accordance with a control signal. Further, it may be possible to select whether to perform the signal processing with a triple clock or the single clock in accordance with the control signal in the signal processing circuit 91.

The A / D conversion circuit 90 and the signal processing circuit 91 correspond to the A / D conversion circuit 50 and the signal processing circuits (1) 55 to (3) 57 shown in FIG. 5, respectively.

By doing so, the power consumption of the signal processing circuit can be reduced. In the other video camera system of the present embodiment described above, FIG.
9 may be provided on the video camera side, or may be provided on the CCU side.

A video camera system as a video signal transmission device according to the present embodiment includes a video camera 1 as an imaging means for outputting a video signal of a subject at a high speed.
A transmission line 23 as a transmission unit for transmitting the video signal supplied by the imaging unit; and a CCU 2 as a signal processing unit for signal processing the video signal transmitted by the transmission unit.
In the video signal transmission device having the above, the high-speed video signal is provided directly by the imaging means or provided with a blank field as an additional period to be decomposed into a plurality of standard-speed video signals, and the transmission means converts the plurality of standard-speed video signals. Transmit,
Since a plurality of standard speed video signals are aligned and output for each unit period T by the signal processing means, signal processing using a plurality of standard signals enables color correction processing unique to video signals and SDI format conversion. By using the circuits and ICs in the existing standard video signal system as they are for signal processing, a high-speed video camera system can be easily constructed.

The video camera system as the video signal transmission method according to the present embodiment includes an imaging step of outputting a video signal obtained by imaging a subject at a high speed, and a transmission step of transmitting the video signal supplied in the imaging step. And a signal processing step of performing signal processing on the video signal transmitted by the transmission step, wherein the high-speed video signal is directly or additionally provided by the imaging step to a plurality of standard-speed video signals. Decompose,
Transmission of multiple standard speed video signals by transmission step,
A plurality of standard speed video signals are aligned and output for each unit period by the signal processing step. By processing the signals using a plurality of standard signals, signals such as color correction processing specific to video signals and SDI format conversion are performed. By using the processing steps in the existing standard video signal system as they are, the processing time can be shortened,
A high-speed video camera system can be easily constructed.

The video camera as the video signal imaging apparatus according to the present embodiment includes an imaging device 10 as an imaging means for outputting a high-speed video signal of a subject at a high speed, and a video supplied by the imaging means. A memory 12 serving as a separating means for decomposing the signal directly or with an additional period into a plurality of standard speed video signals; and a signal processing means for processing the plurality of standard speed video signals so as to be transmittable in a predetermined transmission format. A high-speed video signal is transmitted as a plurality of standard-speed video signals in a predetermined transmission format so that signal processing can be performed. Therefore, the basic configuration is to transmit a plurality of standard-speed video signals. In shooting at the following speeds, variable-speed shooting signals are provided in exactly the same transmission configuration by providing an additional period for each of a plurality of standard video signals. It can be transmitted.

The CCU as the video signal processing device of the present embodiment is a standard speed video signal obtained by directly decomposing a video signal captured at a high speed or by providing an additional period, A process LSI 20 serving as a signal processing means for performing signal processing so that a plurality of standard speed video signals of a predetermined transmission format can be internally processed, and a plurality of standard speed video signals internally processed by the signal processing means are aligned and output for each unit period Since the memory 21 and the switching circuit 22 are provided as switching control means as described above, when a plurality of video signals at a multiple speed or less are output to a plurality of video output lines as they are, the additional period may be finely divided. To prevent signals that are very difficult to handle in external equipment at the subsequent stage due to the intrusion of blank fields It is possible to obtain a smooth image by outputting intermittently including blanking time for each unit is an image rearranged time Te.

Further, the video signal transmitting apparatus according to the present embodiment comprises: an imaging means for outputting a video signal obtained by imaging a subject at a high speed; a transmission means for transmitting the video signal supplied by the imaging means; In a video signal transmission device comprising: a signal processing unit that processes a transmitted video signal, the video signal A is output at a frequency higher than a signal frequency used for a subsequent signal processing in the imaging unit or the signal processing unit. , Post-stage signal processing circuit (1) 55
Since the signal is divided into a plurality of signals B1 to B3 so that the signal frequency is converted by the signal dividing circuit 51 in accordance with the signal processing frequency of ~ 57, the high-speed photographed video is replaced with the standard video signal output. Thus, the power consumption of the device can be reduced by performing the operation of outputting the standard video signal in accordance with the signal processing frequency at the subsequent stage.

[0061]

According to the present invention, there is provided a video signal transmitting apparatus comprising: an imaging unit for outputting a video signal obtained by imaging a subject at a high speed; a transmitting unit for transmitting the video signal supplied by the imaging unit; In a video signal transmission device comprising a signal processing means for signal processing the transmitted video signal, the high-speed video signal is decomposed into a plurality of standard-speed video signals directly or by providing an additional period by the imaging means, Since the plurality of standard speed video signals are transmitted by the transmission unit, and the plurality of standard speed video signals are aligned and output per unit period by the signal processing unit,
By performing signal processing using a plurality of standard signals, the circuit and IC of the existing standard video signal system can be used for signal processing such as color correction processing specific to video signals and SDI format conversion, so that high-speed processing can be performed easily. This produces an effect that a speed photography video camera system can be constructed.

Also, the video signal transmitting method of the present invention includes an image capturing step of outputting a video signal obtained by capturing an image of a subject at a high speed, a transmitting step of transmitting the video signal supplied in the image capturing step, and a transmitting step. In the video signal transmission method comprising a signal processing step of performing signal processing of the transmitted video signal, the high-speed video signal is provided directly or with an additional period by the imaging step, and decomposed into a plurality of standard-speed video signals, Since the plurality of standard speed video signals are transmitted in the transmission step and the plurality of standard speed video signals are output in a unit period in the signal processing step, the signal processing is performed using the plurality of standard signals. This allows existing standard video to be used for signal processing such as color correction and SDI format conversion specific to video signals. By directly using the processing steps in the signal system, to shorten the processing time, an effect that it is possible to construct a high-speed shooting video camera system easily.

Further, the video signal imaging apparatus of the present invention is provided by providing an imaging means for outputting a high-speed video signal obtained by imaging a subject at a high speed, and providing the video signal supplied by the imaging means directly or with an additional period. Separating means for decomposing into a plurality of standard speed video signals, and signal processing means for performing signal processing so that the plurality of standard speed video signals can be transmitted in a predetermined transmission format, wherein a plurality of high speed video signals of a predetermined transmission format are provided. Since it is transmitted so that signal processing can be performed as a standard speed video signal, the basic configuration is to transmit a plurality of standard speed video signals, and for shooting at lower speeds, additional time is added to each of the multiple standard speed video signals. The effect that the variable speed photographing signal can be transmitted with exactly the same transmission configuration is achieved.

The video signal processing apparatus according to the present invention is a standard speed video signal obtained by decomposing a video signal picked up at a high speed directly or by providing an additional period. Signal processing means for performing signal processing so that the standard speed video signal can be internally processed, and switching control means for outputting a plurality of standard speed video signals internally processed by the signal processing means in a unit period. When multiple video signals at multiple speeds or less are output directly to multiple video output lines, a blank field as an additional period is intermingled in small pieces. Prevent the signal from becoming difficult, and output the video once stored and rearranged intermittently every unit time including blank time An effect that it is possible to obtain a smooth image by.

Also, the video signal transmission apparatus of the present invention comprises: an imaging unit for outputting a video signal obtained by imaging a subject at a high speed; a transmission unit for transmitting the video signal supplied by the imaging unit; A signal processing unit for performing signal processing on the transmitted video signal, wherein, in the imaging unit or the signal processing unit, the video signal has a frequency higher than a signal frequency used for signal processing in a subsequent stage. The signal is divided into multiple signals so that the signal frequency is converted to match the signal processing frequency of the subsequent stage. There is an effect that the power consumption of the device can be reduced by performing the operation of outputting the standard video signal according to the processing frequency.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a camera system according to an embodiment.

FIG. 2 is a block diagram illustrating a configuration of a high-speed shooting video camera system according to the present embodiment.

3A and 3B are diagrams illustrating a configuration of a transmission signal of a camera output at the time of variable speed shooting according to the present embodiment. FIG. 3A illustrates a case of triple speed shooting, and FIG. 3B illustrates a case of a double speed shooting.

4A and 4B are diagrams illustrating a configuration of a transmission signal of a CCU output at the time of variable speed shooting according to the present embodiment, where FIG. 4A is at the time of triple speed shooting, and FIG. 4B is at the time of double speed shooting.

FIG. 5 is a block diagram illustrating a configuration of another camera system according to the present embodiment.

FIG. 6 is a block diagram illustrating a configuration of a signal division circuit according to the present embodiment.

FIG. 7 is a block diagram showing a configuration of signal processing circuits 1 to 3 of the present embodiment.

FIG. 8 is a block diagram illustrating a configuration of another camera system according to the present embodiment.

FIG. 9 is a block diagram illustrating a configuration of another camera system according to the present embodiment.

[Explanation of symbols]

1 video camera, 2 CCD, 3 VTR, switcher, 4 optical fiber, 5 cable, 1
0: imaging device, 11: A / D conversion circuit, 12:
... Memory 13, Process LSI 20, Process LSI 21, Memory 22, Switching circuit 23
... Transmission path, SO1 to SO3... Multiple standard video signals, Sbf... Blank field signal, SI1 to SI
3 ... Several SDI signal outputs, SL ... Slow playback output, S1 to S3 ... Several standard video transmission signals, SU
1 to SU3: a plurality of standard video internal processing signals, 50
... A / D conversion circuit, 51 ... Signal division circuit, 52-5
4 switch 55 signal processing circuit 1 56 signal processing circuit 2 57 signal processing circuit 3 60 switch 61 61 63 memory 70 detail processing circuit 71 ... Gamma processing circuit, 72... White clip processing circuit, 80... A / D conversion circuit, 81... Signal division circuit, 82... Signal processing circuit 1, 83... Signal processing circuit 2, 84. Circuit 3, 90: A / D conversion circuit, 91: Signal processing circuit 1

Claims (5)

[Claims] An imaging unit for outputting a video signal obtained by imaging a subject at a high speed; a transmission unit for transmitting a video signal supplied by the imaging unit; and a signal processing unit for processing the video signal transmitted by the transmission unit. A video signal transmission device comprising: a high-speed video signal directly or with an additional period decomposed into a plurality of standard-speed video signals by the imaging device; A video signal transmitting apparatus for transmitting a video signal and outputting a plurality of standard speed video signals in a unit period by the signal processing means. 2. An imaging step of outputting a video signal obtained by imaging a subject at a high speed; a transmission step of transmitting the video signal supplied by the imaging step; and a signal processing of the video signal transmitted by the transmission step. A video signal transmission method comprising the steps of: (a) decomposing a high-speed video signal into a plurality of standard-speed video signals directly or with an additional period in the imaging step; A video signal transmitting method, comprising transmitting a video signal, and outputting a plurality of standard speed video signals in a unit period by the signal processing step. 3. An imaging means for outputting a high-speed video signal obtained by imaging a subject at a high speed, and a video signal supplied by the imaging means is decomposed into a plurality of standard-speed video signals directly or with an additional period. Separating means, and signal processing means for signal-processing the plurality of standard-speed video signals so that they can be transmitted in a predetermined transmission format, so that the high-speed video signal can be processed as a plurality of standard-speed video signals in a predetermined transmission format. A video signal imaging device characterized by transmitting. 4. A plurality of standard speed video signals obtained by decomposing a video signal captured at a high speed, directly or by providing an additional period, and a plurality of standard speed video signals of a predetermined transmission format can be internally processed. A video signal, comprising: a signal processing means for performing signal processing; and a switching control means for outputting a plurality of standard speed video signals internally processed by the signal processing means in a unit period. Processing equipment. 5. An imaging means for outputting a video signal obtained by imaging a subject at a high speed; a transmission means for transmitting a video signal supplied by the imaging means; and a signal processing means for processing the video signal transmitted by the transmission means. A video signal transmission device comprising: a signal processing unit that outputs a video signal at a frequency higher than a signal frequency used in a subsequent signal processing in the imaging unit or the signal processing unit; A video signal transmission device, wherein a signal is divided into a plurality of signals so that a signal frequency is converted so as to be adjusted to a signal frequency.